"Type N1 standard tes" CNS Standards Search Result |
CNS 4121
- English Version Type N1 standard test block for ultrasonic normal beam testing of steel plates 超音波檢測鋼板用N1型標準規塊 - 英文版 |
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CNS 4121
- English Version Type N1 standard test block for ultrasonic normal beam testing of steel plates 超音波檢測鋼板用N1型標準規塊 - 英文版 |
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